For the years ended December 31,

2013

2014

2015

Net income attributable to Qihoo 360 Technology Co. Ltd

99,652

222,768

306,968

Undistributed earnings allocated to participating unvested shares (i)

3,175

3,848

2,538

Eliminate the dilutive effect of interest expense of Convertible Senior Notes

-

32,351

Net income attributable to Class A and Class B ordinary shareholders for computing basic net income per ordinary share

96,477

218,920

304,430

Net income attributable to nonvested shareholders for computing basic net income per participating unvested shares (i)

3,175

3,848

2,538

Weighted average ordinary shares outstanding used in computing basic net income per Class A and Class B ordinary share

174,727,288

181,909,716

184,322,471

Weighted average shares used in calculating net income per participating unvested share-basic

5,749,393

3,197,500

1,536,964

Effect of dilutive securities:

Plus incremental weighted average ordinary shares from assumed exercise of stock options and nonvested shares using the treasury stock method

12,560,169

12,384,156

8,676,398

Plus incremental weighted average ordinary shares from Convertible Senior Notes using as-if converted method

-

20,732,187

Weighted average ordinary shares outstanding used in computing diluted net income per Class A and Class B ordinary share (i)

193,036,850

197,491,372

215,268,020

Net income per Class A and Class B ordinary share-basic

$

0.55

$

1.20

$

1.65

Net income per participating unvested share-basic

$

0.55

$

1.20

$

1.65

Net income per Class A and Class B ordinary share-diluted

$

0.52

$

1.13

$

1.58